Abstract: A compound represented by Formula (I) is provided: In Formula (I), R3, R4, and R5 each independently represent an electron-withdrawing group; R1, R2, R6, and R7 each independently represent a hydrogen atom, a heterocyclic group, a halogen atom, a nitro group, a cyano group, a hydroxy group, a thiol group, a carboxy group, —SCF3, —SF5, —SF3, —SO3H, —SO2H, an aliphatic hydrocarbon group having 1 to 25 carbon atoms which may have a substituent, or an aromatic hydrocarbon group having 6 to 18 carbon atoms which may have a substituent; and R1 and R2, R1 and R6, R6 and R7, and R4 and R5 may be linked to each other to form a ring.

Abstract: A compound having a molecular weight of 3000 or less and a partial structure represented by Formula (X) is provided: In Formula (X), a ring W1 represents a ring structure having at least one double bond as a constituent element of the ring and having no aromaticity; and R3 represents a heterocyclic group, a halogen atom, a nitro group, a cyano group, a hydroxy group, a thiol group, a carboxy group, —SF5, —SF3, —SO3H, —SO2H, an aliphatic hydrocarbon group having 1 to 25 carbon atoms which may have a substituent, or an aromatic hydrocarbon group having 6 to 18 carbon atoms which may have a substituent.